fix: harden competitor create and batch kol stats

server/internal/tenant/app/kol_dashboard_service.go

@@ -111,19 +111,18 @@ func (s *KolDashboardService) PerPackage(ctx context.Context, actor auth.Actor)
 		usageByPackage[stat.PackageID] = stat
 	}
 
+	subscriberCounts, err := s.subRepo.CountActiveSubscriberTenantsByPackages(ctx, packageIDs)
+	if err != nil {
+		return nil, response.ErrInternal(50123, "kol_dashboard_subscriber_query_failed", err.Error())
+	}
+
 	result := make([]DashboardPackageStat, 0, len(packages))
 	for _, pkg := range packages {
-		subscribers, err := s.subRepo.ListActiveSubscribersForPackage(ctx, pkg.ID)
-		if err != nil {
-			return nil, response.ErrInternal(50123, "kol_dashboard_subscriber_query_failed", err.Error())
-		}
-
-		subscriberTenants := uniqueSubscriberTenants(subscribers)
 		usage := usageByPackage[pkg.ID]
 		result = append(result, DashboardPackageStat{
 			PackageID:         pkg.ID,
 			PackageName:       pkg.Name,
-			SubscriberTenants: subscriberTenants,
+			SubscriberTenants: subscriberCounts[pkg.ID],
 			UsageCount:        usage.Total,
 			FailureRate:       float64(usage.Failed) / float64(maxDashboardBase(usage.Total)),
 		})